Lock



INVENTORS CHARLES KEM P IRVING KEMP ATTORNEY May 21, 1935. c. KEMP ET AL2,002,014

LOCK

Filed April 5, 1933 5 Sheets-Sheet 3 FIG. 7

g? m ag'muuum 4!; I Jhmwwdilhmm ll: 37 '5 as 25 CHARLES KEMP RVING KEMPi A ORNEY May 21, 1935. c. KEMP ETAL 2,002,014

LOCK

Filed April 5, 1933 5 Sheets-Sheet 4 Fl GuLi INVENTORS CHARLES KEMPInvme KEMP May 21, 1935. c. KEMP ET AL 2,002,014

LOCK

Filed April 5, 1935 5 5 Sheets-Sheet 5 enflors:

CHARLES EM AND I IVY/N6 KFM'P Patented May 21, 1935 5 UNITED STATESPATENT OFFICE LOCK Charles Kemp and Irving Kemp, New York, N. Y.

Application April 5, 1933, Serial No. 664,474 5 Claims. (01. 70-74) Thisinvention relates to locks. It is particularly directed to a lockadapted to be attached to a door and actuated from opposite sidesthereof, for example, on one side by a hand knob and on the oppositeside by a key,and wherein upon locking the lock with a key from theoutside the lock cannot be opened from the insideby turning thehandknob. With locks of this character, it has heretofore been possibleto surreptitiously remove the lock off the door from the inside, forexample, by a burglar breaking into a premises through a window, byfirst unscrewing the screws, which attach the lock casing to the door.

It is therefore anobject of the invention to 1 prevent the removal ofthe look from the door without first opening the lock in the propermanner so that even though the screws areremoved from the lock casing,the lock cannot be removed from the door and remains in lockedcondition.

A further object of this invention is to provide an improved lock havinga central horizontal bolt and a pair of symmetrical, vertical boltsnor-' mally wholly contained within the lock casing when in unlockedcondition, and adapted to be 1 projected into engagement with a keeperon the door jamb, the construction of the lock being such as to permitthe same to be embodied rim lock or mortise lock.

. A still further object of this ina invention is to provide a neat,compact and rugged jimmy-proof lock of the character described,comprising comparatively few and simple parts, which shall be easy tomanipulate, positive and smooth in action, relatively inexpensive tomanufacture, and never- 1 theless practical and efficient to a highdegreein In the accompanying drawings, .in which is shown one of thevarious possible illustrative embodiments of this invention,

. Fig. 1 is a side elevational View of a door and door jamb and showinga mortise lock embodying the invention in dotted lines; V

, Fig. 2 is an end elevational view of thedoor shown in Fig. 1;

3 is a side elevationalview of adoo r and door l b provided with a rimlock embodying the invention; i

' Fig. 4 is an endelevational view of a door and lock shown in Fig. 3;

Fig. 5 is a rear elevational view of the lock with parts broken away toshow the interior construction;

Fig. 6 is aview similar to Fig. 5, but shows the lock in lockedcondition;

Fig. '7 is a cross-sectional View taken on line 'i'! of Fig. 5;

Fig. 8 is a cross-sectional view taken on line 8+8 of Fig. 6; g

Fig. 9 is a rear elevational view of a lock embodying the inventionillustrating a modifiedconstruction; p l 4 Fig. 10 is an interior topplan view of the improved location plate i or the lock shown in Fig. 5;

Fig. 11 is a cross-sectional view taken on line HH of Fig. 10;

Fig: 12 is a cross-sectionai view taken on line !2- l2 of Fig. 5; i Fig.13 isa perspective view of one of the vertical bolts shown in Fig. 5;

Fig. 14 is a perspective view of the horizontal bolt and part of thelock casing;

Fig. 15 is a horizontal, cross-sectional view of the location plateattached to the door and showing the lock and keeper in dot-dash lines;

Fig. 16 is an elevational, diagrammatic view of the seating mechanism,looking toward the inner side otthe rear cover plate and showing theportion of the seating discand the reciprocating plate when the lock isopen; I

Fig. '1'? is a view similar to Fig. 16 but showing the parts when closedby the key but before removing the key from the lock; 9

Fig. 18 is a view similar to Fig. 17 but showing the parts with the keyremoved from the door after the lock has been closed by said key;

Fig. 19 is a view similar to Fig. 16 but showing the intermediateposition of the parts when closing the same by means of the knob; and'Fig. 20 is a view similar to Fig. 16 but showing the position of theparts whencompletely closed by the knob. i 7

Referring now in detail to the drawings, and particularly to Figs. 3,4,5,6, '7, 8, 10, 11, 12and 13, I designates a door to which there isattached a look I l embodying the invention and cooperatplate 23 fixedthereto and described in greater detail hereinafter.

The end wall l9 of the casing is formed with a central opening 26 and apair of openings 21 on opposite sides of said central opening. Extendingfrom the front wall l5 are a pair of parallel integral guide walls 28,said walls extending to the end wall l9 and terminating as at 29, shortof the end wall I l of the casing. The guide walls 28 furthermore, aresubstantially half the height of the top and bottom walls i6 and areformed with front edges 59. Disposed within the casing is a horizontalor main bolt 32, shown in detail in Fig. 14. Said bolt comprises aportion 33 adapted to pass through the opening 26 in the end wall IQ ofthe casing and contacting the inner surfaces of the guide walls 28.

Extending from said portion 33 are extending arms 34 contacting theedges 39 of the guide walls 28. The top surface of the bolt 32 isfurthermore formed with a groove 35, the bottom surface of'which ispreferably substantially flush with the edges 99 of said guide walls.The bolt is furthermore formed with a portion 31 parallel to the groove35 and having extensions 38 overlapping the side edges 39 and extendingbeyond the guide walls in opposite directions. Extending from theportion 3'! are flat portions 39 substantially contacting the innersurface of the front wall i5 and. separated by a central cut-out portion49 forming arms 4! and 52 having coplanar surfaces 44, for the purposehereinafter appearing.

Means is provided for reciprocating the bolt 32. To this end, there ismounted on the surfaces 45 of the arms 4i and 42, an angle-shaped member46 described in greater detail in our co-pending application, Serial No.606,499, filed April 20, 1932. As described in our said co -pendingapplication, the member 46 is adapted to be reciprocated on said portion39 for movement in a direction perpendicular to the longitudinal axis ofthe bolt 32. The member 49 is provided with a tubular member 41 having asemi-circular portion 41a and having a through opening 5 l A hand knob48 journaled to the wall I5 of the casing, is provided with an'arm 49having a pin 50 received within the opening 5! of the tubular member 41.It will now be understood that as the knob 48 is turned, the arm 49 willcause the plate 46 to be reciprocated with respect to the bolt 32 forcausing reciprocation of said bolt, whereby the portion 93 of the lattermay be projected through the opening 26 andretracted into the casing. Acoil torsion spring 52, such as described in our said co-pendingapplication, may be provided for retaining the bolt at the ends of itsstrokes.

- Means is further provided for reciprocating the bolt by means of a keyactuated mechanism and for preventing retraction of the bolt by means ofthe knob after the same has been projected by means of the key, and forpreventing retraction of the bolt by means of the key after the same hasbeen projected by means of the knob. This structure is similar to thestructure described and claimed in the patent of Frederick W. Heyel, No.1,908,980 issued May 16, 1933, and. consists generally of a plate 54rotatably mounted on a cover plate 23 and having an opening 55 formedWith a pair of opposite angular segments 56, 51 to give the usual keybar a lost motionof 90. Fixed to theplate 54 and projecting toward thefront wall I5, are a pair of pins 58 and 59, The smaller pin 58 onlv isadapted to be received within the semi-circular portion 41a and theother pin 59 is adapted to contact said portion. The operation of themechanism is described in detail in said patent of Frederick W. Heyel,said mechanism being so constructed that upon locking the look by meansof the key actuated mechanism, the lock can only be opened by means ofthe key actuated mechanism, and cannot be opened by turning the knob 48;and further upon locking the lock by turning the knob 48, the lock canonly be opened by turning the knob in an opposite direction, and cannotbe opened by the key actuated mechanism.

In Fig. 15 the location plate is shown as attached to the key tumblerand the door in the usual manner, and is provided with the usual opening|8a receiving the usual flat, elongated actuating strip 54a, turned bythe key and projecting from the key tumbler. The strip 55a extendswithin the opening 55 in the disc 54 and is adapted to engage theopposite angular segments 55, 51. In Fig. 16 the segment 55 isdesignated on the drawings by oblique cross-sectional lines, and thevertical edge thereof is indicated by numeral 55a and the horizontaledge thereof by numeral 56b. The angular segment 57 in Fig. 16 isdesignated on the drawings by vertical, cross-sectional lines and thevertical edge thereof designated by numeral 57a and the horizontal edgethereof by numeral 515. As shown in Fig. 16, the strip 5 1a contacts theedges 55b, 5% of the segments 55, 57.

Fig. 16 shows the position of the disc 54, sliding plate 55, the pin 58and projection 59, the actuating strip 54a and the angular segmentalshaped projections 56 and 5?. In said figure, the parts are shown inposition when the door is unlocked, the plate 68 being at the left. Forclosing the look by means of the key, the key is turned in the directionfor moving the actuating strip 55a in a clockwise direction, looking atFig. 16, said movement causing rotation of the disc 54 by reason of theinterengagement of said strip with the angular portions 56, 51. R-tation of the key through 180 will cause the pin 58 to engage thesemi-circular portion Hit of the plate 46 and move the same to theposition shown in Fig. 17 for projecting both the horizontal and thevertical bolts simultaneously, and locking the door. Before the key canbe removed however, from the key tumbler, said key must be turned 180 inthe same direction to the position shown in Fig. 18. During this lattermovement, the

projection 59 will have been moved into contact with the upper and outersurface of said semicircular portion 57a. The plate 55 will not moveduring the last 180 rotation of the key since the pin 58 will merelymove away from said semicircular portion.

It will now be seen that with the parts in the position shown in Fig.18, the lock may not be opened from the. inside by means of the knob 48,since to do so, the knob must be moved in a counterclockwise directionfor rotating the semicircular portion lla likewise in a counterclockwisedirection. Such latter movement is not possible since the pin 50 whichengages within the bearing opening of the plate 46 will move the portion41a of said plate against the pin or projection 59. Said projection isfixed to the disc 54 WhiCh cannot rotate in a counterclockwisedirection. because of the interengagement of the segmental portions 56and 51 with the actuating strip 54a held in locked position by thetumblers of the look.- Thus, after the lock has been locked by -the key,it ;can only be opened bythekey.;; i 1 When the lock is open and theparts are in thelposition shown in Fig. l6, the door may be locked fromthe inside by means of the knob 48. ,When looking the door from theinside the pin 50 moves the plate to the positionshown in Fig. 19without turning the disc 103, since the portion 41a, of said plate. willmove off the pin 58.; However, when said portion 41 engages theprojection 59, the disc will be rotated in a clockwise direction forbringing the parts to the position shown in Fig. 20. In this position,the projection 59 willbe belowthe portion 41. It will be noted thatduring the last portion of themovement, rotation of the disc willbringthe segmental portions' 56, 51 to the position shown in Fig. 20 of thedrawings withoutobstruction from the strip 54a. With the parts as shownin Fig. 20, the lock having been locked by means of the knob from theinside, said lock cannot be opened by the key from the outside, sinceturning movement of the key in a counterclockwise direction will causethe strip 54a to engage the segmental portions 56, 51 of the disc 54.

The disc however, cannot rotate counterclockwise because its projection59 is in contact with the portion 41a of the plate 46. Said projection59 cannot, however, enter the semi-circular opening of said portion 41aand therefore cannot retract the plate. It will be noted thatthe boltslidably receives the plate 46 and the knob is provided with an armhaving a pin at the end.

thereof pivoted to the bearing 5! aligned with the semi-circular portion41. Thus an upward pressure on the portion 41a cannot causereciprocation of the'plate for retracting the bolt.

Saidbolt can be retracted only when a pin enters the semicircularportion 41 and'the disc is rotated. A pressure directly upwardlyhowever, does not have any component to pull the plate to the left. Itis only when the pin 58 engages within the semi-circular opening of saidportion 41 and the disc is turned, that a rotative force on the discwill cause a pull on the platehaving component force directed to theleft for pulling the horizontal bolt to the left to the retractedposition thereof. However, movement of the knob 48 in a counterclockwisedirection will cause, due to the interengagement of the pin 50 withinthe bearing 5|, movement of the plate member for retracting the boltsand opening the lock. Thus, once the lock is closed by the knob,

it can only be opened by the knob.

- Slidablymounted on the bolt 32 for movement in a vertical directionwith respect to said bolt are a pair of similar, symmetrically disposedbolts 60 one of which is shown in detail in Fig. 13 of the drawings.Each bolt 60 is provided with an arm 6| received within the groove 35and con tacting the bottom surface of the groove and the edge 30 of oneof the guides 28. Extending from the arm fil is an arm 62 disposed atright angles to the; arm 61 and extending toward the end-wall 19 of thecasing. It will benoted that the arm 62 is thicker than the arm 5| andextends toward the wall l5 of the casing. Extending from the wall 62 isan arm 63 parallel to the arm 6|. The

outer surface .64 of'the arm 63 isof substantially the samelsi'ze as oneofthe openings 21, so that the. bolts 60 may move withthe horizontalbolts simultaneously. The inner surface (6510f the arm. 63substantially-contacts one of the guide walls 28, said guidewalls beingdisposed adjacent the inner ends of the openings 21. For the purposehereinafter appearing, each arm 62 is. provided with a notch 61 on theedge thereof adjacent the arm 63. i i

The keeper l2mounted'onthe door jamb II is provided with a wall having apair of openings 21a for receiving the arms 63 of the. bolt 60, and withan opening 26a for receiving the portion 33 0f the horizontal bolt 32.Said keeper i2 is further formed with a pair of spaced, square openings63a, for the? purpose hereinafter appearing. x

- It will now be understood that uponioperation of the key actuatedmechani'smor the knob 48, the central or horizontal bolt 32' togetherwith its vertical bolt 60, may be moved to the right to project theportion '33 of the central bolt and the portions 63 of the bolt throughthe openings 26a and 21a, respectively, of the keeper 1 l2. Means isprovided for moving the bolts 60 toward one another'for engaging the arm63 within the opening 63a after said arms 63 have passed through theopenings 21a. Tothis end, the cover plate 23 is formed with a pair ofpins 1| symmetrically disposed with respect to the longitudinalmid-sectionof the cover plate and extendinginwardly toward the wall (5;Pivoted to said pins 1| are a pair of similar, symmetrically disposedplates 12, said plates being pivotedfat one end thereof to said pins 1!and contacting the upper surface of the portion 31 of the bolt 32.Extending from said portion 31toward the cover plate, are a pair of pins13 likewise symmetrically disposed with respect to the horizontalmid-section of the cover plate. The plates 12 are provided withsymmetrically disposed slots 15 having portions 16 normally parallel toone another during the first portion of the projecting movement of thehorizontal bolt. Extending from the portions 16 of the slots areportions 11. These extend outwardly at an angle to said portions 16 sothat as the horizontal bolt is projected, the pins 13 reaching theportions 11 of the slots 15 will cause the plates to be moved' inwardlytoward one another. Fixed to each of plates 12 is a pin 18 projectingtoward the wall {5 and so positioned that as the pins 13 reach theportion 11 of theslots 15 the pins 18 will enter the notches 61 in thearms 61 ofjsaid bolts 60, so that as the plates 12 are pivoted inwardlytoward one another, the pins 18 engaging within the slot 51 will causesliding movement of the bolts 60 toward one another to cause the arm 63of said bolts to engage within the openings 63a in the keeper.Actuationof the knob or the key actuated mechanism in a direction tounlock the lock, will cause the horizontalbolt to be retracted for firstpivoting the plates 12 outwardly away from one another to slidably movethe bolts 60 away from each other and disengage the arms 63 thereof fromthe openings 63a and to thereafter retract the bolt 32 together with itsbolts 60 into the casing.

It will now be'understood that when the lock,

heretofore described, is closed by means of' the key actuated mechanism,for example, from the,

outside of the door, the lock cannot be unlocked by turning the knob,for example, from them side of the door. Thus when the proprietonforexample, of a premises leaves the premises and locks thelock by means ofthe key, a burglar may enter the premises through the window,

-23 a location plate 80 shown in detail in Figs 10 and 11 of thedrawings.

The location plate is covered by the casing and rests on the coverplate, and cannot be reached from the outside of the, lock casing. Thewall l6 of the casing may, however, be formed with grooves for receivingtonguescal having edges 82 adapted to i be set flush with the edgeof thedoor for positioning the opening 85 whereby the exact position of thekey tumbler may be ascertained. The location plate is fixed to the doorby means of the usual screws. on the tumbler extending through theopenings 86, these screws not being accessible from the outside of thelock casing,

as shown in our co-pending application Ser. No. 632,288, filed Sept. 9,1932. The location plate is provided with a pair of spaced, preferablyintegral, forked members or portions 83 extending into the casing andeach having a slot 89. Fixed to the portion 3! of the bolt and adjacentthe ends 38 thereof, are a pair of pins 99 each having a head 9|. Theforks 88 are so located that when the bolt is in the fully projectedposition thereof, shown in Fig. 6 of the drawings, the

pins 90 will enter the slots 89 and the heads 9! will engage the forkedarms 83.

It will thus be seen that when the lock is in locked condition, theforked portions 88 engage the heads 9i so that should the usualattaching screws be removed from the casing itself, the lock wouldnevertheless be still attached to the location plate by means of theengagement of the pins 90 with the forked members 88 and hence removalof the lock, would be prevented.

Furthermore, the plates 12 may be provided with symmetrically disposednotches 92 on the inner edges thereof, and a pin 95 having a head 96 maybe attached to the inner side of the location plate, said pin being solocated that when the horizontal bolt is in the fully projected positionthereof and the plates l2 have been pivoted toward one another, the pin95 will be received within the notches 92, and the head 95 willengagethe inner surfaces of the plates 12. With this construction also,upon removal of the attaching screws for the lock casing, the lockcannot be removed by reason of the fact that the plates 72 engage thepin 95 and its head 95. be formed with suitable openings 98 to permitthe forked portions 88 to pass therethrough, and with. an opening 99 topermit the pin 96 to pass therethrough. If desired, the forks 88 or pin95 may be omitted. The portion 31' is formed with a slot 37a receivinghead 96 of pin 95.

In the lock shown in Figs. 5, 6, 7 .and 8 of the drawings, the plate 5%with its pins 58 and 59 and the knob 48 may be replaced by the usual keytumblers on opposite sidesoi the lock connected to the main bolt in theusual manner well known in the art. In suchcase likewise, when the lockis in looking, condition, the location plate with the forks 88 or thepin 95 prevent the lock casing from being removed from The cover plate,of course, must.

2,002,014 but cannot turn the knob tounlock the lock.

the door by unscrewing the usual attaching screws.

In Fig. 9 of the drawings, there is shown a lock having a central bolt32, but provided with vertical bolts 60a substantially similar to thebolt 60 but having arms I00 extending away from one another instead oftoward each other, as are arms 63. With this construction, the pivotplates 'IZa'are provided with slots d having portions 16a, parallel toone another when the bolts are in retracted positiomand portions Tianormally extending toward one another when the bolts are in retractedposition, instead of extending away from each other, as in Fig. 5 of thedrawings. With the construction shown in Fig. 9, upon projecting thehorizontal bolt the vertical bolts will likewise be projected. When thepins Ha however, fixed to the horizontal bolt, reach the portion 'l'laof the slots, the vertical bolts will be moved away from each other toengage the armslilfl in suitable openings in a keeper.

As shown in Figs. 1 and 2 of the drawings, the lock may be in the formof a mortise lock actuated either by a key on one side and a knob on theother side, or by keys on opposite sides, in the conventional manner foractuating the bolt. In such case the location plate may be omitted.

It will thus be seen that there is provided a device in which theseveral objects of this invention are achieved, and which is welladapted to meet the conditions of practical use.

As various possible embodiments might be made of the above invention,and as various changes might be made in the embodiments set forth, it isto be understood that all matter herein set forth or shown in theaccompanying drawings is to be interpreted as illustrative and not in alimiting sense.

Having thus described our invention, we claim as new and desire tosecure by Letters Patent:

1. A look comprising a bolt and formed with a groove, an additional pairof similar, symmetri-= cally disposed bolts having aligned arms slidablyreceived within said groove, second arms extending at right angles tosaid first arms, and respectively, aligned third arms parallel to saidfirst-arms, respectively, means for slidably moving all of said bolts inone direction and means for causing sliding movement of said pair ofbolts in a direction transverse to the sliding move ment of said firstbolt.

2. A lock comprising a casing, a bolt slidably mounted therein, a secondbolt having-an arm slidably mounted on said first bolt for movement in adirection transverse to the movement of said first bolt, said secondbolt having a sec-. and arm parallel to the direction of movement ofsaid first bolt and a third arm parallel to saidfirst arm, means forreciprocating said first bolt, a member pivoted with respect to saidcasing and having a slot, and a pin on said first bolt received within.said slot, the first arm of said second bolt having a slot, and a pin onsaid pivoted member adapted to engage within said last mentioned slot.

' 3. A look comprising a casing, a bolt' slidably mounted therein andadapted to be projected therefrom, means for reciprocating said bolt, a

pair of similar, symmetrically disposed bolts, each.

having an arm slidably mounted on said first bolt, and means for causingslidable movement of said pair of bolts in opposite directions uponprojecting saidfirst bolt, said means comprising a pair of symmetricalplates having slots and pivoted (lit to said casing atadjacent ends,said first bolt having pins projecting into said slots, and said plateshaving pin and slot connections with said pair of bolts during part ofthe pivotal movement of said plates.

4. A lock comprising a casing, a bolt slidably mounted therein, a secondbolt having an arm slidably mounted on said first bolt for movement in adirection transverse to the movement of said first bolt, said secondbolt having a second arm parallel to the direction of movement of saidfirst bolt and a third arm parallel to said first arm, means forreciprocating said first bolt, a member pivoted with respect to saidcasing and having a slot, and a. pin on said first bolt received Withinsaid slot, the first arm of said second bolt having a slot, and a pin onsaid pivoted member adapted to engage within said last mentioned slot,the pin on said pivoted member being movable out of the slot in saidsecond bolt.

5; A look comprising a casing, a bolt slidably mounted therein, a secondbolt slidably mounted on said first bolt for movement in a directiontransverse to the movement of said first bolt, means for reciprocatingsaid first bolt, a member pivoted with respect to said casing and havinga pin and slot connection with said first bolt, said second bolt havinga slot and a pin on said pivoted member adapted to engage within saidslot and movable out of said slot.

CHARLES KEMP.

IRVING KEMP.

